Class 494/4 - In response to centrifugal force

Subclass of Class 494 - Imperforate bowl: centrifugal separators
Definition: Apparatus wherein the condition to which the means reacts
No. of patents: 31
Last issue date: 05/13/2008

Number	Title	Issue Date
7371322	Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work...	05/13/2008
7335312	Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation....	02/26/2008
7326169	Full-jacket helix centrifuge with a weir A full-jacket helix-type centrifuge including a drum and at least one weir having a port. A throttle disk is assigned to the port. At least one nozzle rotates with the drum and is assigned to an outlet for discharging clarified liquid from the drum. ...	02/05/2008
7320750	Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta...	01/22/2008
7294274	Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc...	11/13/2007
7282147	Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem...	10/16/2007
7241281	Blood component separation method and apparatus An apparatus and method for collecting whole blood and then separating it into components for subsequent use or storage. A self-contained bag set is used to collect the sample, which may then be placed into container adapted to fit into a centrifuge for separation o...	07/10/2007
7118521	Centrifugal separator with conical pump inlet A centrifugal separator has a centrifugal rotor that is rotatable about a vertical axis and has both a rotor body for separation of two liquids, having different densities, and a pumping member that is designed to pump via the outside of a conical body a mixture of ...	10/10/2006
7018326	Centrifuge with impellers and beach feed A centrifuge for separating feed material into component parts, in one aspect primarily solid and primarily liquid parts, the centrifuge, in certain aspects, including a conveyor rotatably mounted in a rotatable housing, the conveyor having an interior and at least ...	03/28/2006
6971525	Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation....	12/06/2005
6932913	Method for vibration in a centrifuge A system and method for vibration in a centrifuge is disclosed. A centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a non-rotating sleeve. The fluid separation wall rotates around the axis of rotation and ...	08/23/2005
6855102	Method for separating cells, especially platelets, and bag assembly therefor Method of separating cells in a centrifuge, preferably for producing platelets. A cell suspension is provided in a processing bag and is centrifuged. The cell enriched fraction is transferred to a storage bag via an outlet tube. The outlet tube is arranged with a po...	02/15/2005
6823238	Selective apparatus and method for removing an undesirable cut from drilling fluid A method and apparatus selective remove undesirable low gravity components from the return stream of drilling mud. The apparatus receives mud returned from the well borehole and transfers the mud to a tank. Mud from the tank is treated in a separation system includi...	11/23/2004
6607473	Methods for centrifugally separating mixed components of a fluid stream under a pressure differential A fluid mixture containing a heavy component and a light component is separated by feeding the fluid mixture into a vessel. The vessel includes a light component outlet regulated by a first valve and a heavy component outlet regulated by a second valve. T...	08/19/2003
5935051	Blood separation device A separator and a method for quickly separating an aliquot of plasma or serum from cells in a sample of blood is provided herein. The separator includes a housing which defines a separation container, an outlet aperture, a valve which selectively seals th...	08/10/1999
5913767	Worm centrifuge with centrifugal valve A worm centrifuge for separating solids/liquid mixtures is disclosed for overcoming the problems during start-up and shut-down processes that occur when quantity of a liquid is located or remains in the centrifuge drum, particularly the problem of the eme...	06/22/1999
5830352	Centrifuge reagent delivery system A reagent delivery system comprises an axial hub passing through the center of two equal-diameter, spaced apart discs, wherein the hub and discs are positioned in a sleeve such that an annular reagent chamber is provided. When the sleeve is moved in eithe...	11/03/1998
5618409	Centrifuge for the continuous separation of substances of different densities The centrifuge (1) described has at least one device (11,12) designed to control the operation of the centrifuge, the devices being mounted to rotate with the rotating part of the centrifuge and to be operated by a mechanical actuator (13) also rotating w...	04/08/1997
5334130	Centrifugal vacuum concentration with holder assembly A vial holding a material such as an organic liquid-containing biological specimen is received in the receptor of a holder assembly, the assembly further including a centrifugal valve. The holder is mounted on a rotor in a centrifugal vacuum concentrator ...	08/02/1994
5041075	Continuous-operation centrifuge drum for concentrating suspended solids A continuous-operation centrifuge drum for concentrating suspended solids. The concentrated solids are diverted out of an outer solids space through channels into an inner chamber, whence the concentrated solids are continuously extracted. At least one vo...	08/20/1991
4882094	Separation system for dewatering radioactive waste materials Disposal container structure for the disposal of waste radioactive materials includes inner structure comprising a cover member with an inlet port and an annular seal surface portion, and depending filter structure attached to the cover structure that inc...	11/21/1989
4729759	Centrifugal separator arranged for discharge of a separated product with a predetermined concentration The invention resides in the provision of a sludge recirculation controlled in this manner within the centrifuge rotor itself. For this reason there has been arranged centrally in the rotor, apart from a previously known reception chamber (10) for separat...	03/08/1988
4720284	Method and means for separation of blood components In a method of separating different density fluid components, a fluid sample is placed in a first flexible container. The container and its contents are then spun at high speed while controlling the shape of the container so that its side walls spread apa...	01/19/1988
4585558	Separation system A separation system for dewatering radioactive waste materials includes a disposal container, drive structure for receiving the container, and means for releasably attaching the container to the drive structure. Separation structure disposed in the contai...	04/29/1986
4543083	Centrifuge and valve therefor A centrifuge for separating first and second liquids having different specific gravities includes a container supported for rotation about an axis, a drive arrangement for rotating the container, a supply arrangement for introducing a mixture of the liqui...	09/24/1985
4417884	Centrifuge timer clamp A timing and control mechanism for a centrifuge comprising a piston to which is attached a cam having cam surfaces which interact with flexible tubing to control the rate of flow through the tubing. The velocity of the piston in the centrifugal force fiel...	11/29/1983
4410317	Self-discharging centrifugal drum A self-discharging centrifugal drum for clarifying and separating suspensions has an axially displaceable piston valve that is bounded above by a solids space and that opens and closes expulsion openings in the drum jacket. A closure compartment that can ...	10/18/1983
4392845	Discharge nozzle for centrifugal separator drums Discharge nozzles are provided in centrifugal separator drums for the continuous discharge of the concentrate separated in the drum, and are inserted into the drum wall from the outside for the sake of ease of installation and cleaning. To enable the disc...	07/12/1983
4210275	Continuously operating centrifugal separator A centrifugal separator having an upper paring chamber 5 and paring disc 6, a lower paring chamber 8 and paring disc 9, an air seal 10, 11 over the upper paring chamber and paring disc, and a radially extending overflow passage 15 disposed between the upp...	07/01/1980
4169060	Blood-collecting and serum-dispensing device A device is provided for collecting and separating a two-phase liquid, and for dispensing the light phase. The device provides improved structure such that the dispensing aperture is protected from premature liquid contact by a partition. Upon phase separ...	09/25/1979
3989184	Apparatus for collecting and classifying a mixture of solid, gaseous and liquid constituents A vacuum cleaner wherein a mobile housing contains a tank for a supply of liquid and is connected with a first tube which supplies liquid to a brush serving to scrub and wet a surface to be treated. The brush is further connected with or adjacent to the i...	11/02/1976

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Class 494/4 - In response to centrifugal force